Shingle-jointing machine



(No Model.) 2 Sheets-Sheet 1.

W. CARSON.

SHINGLE JOINTING MACHINE.

No. 299,619. Patented June 3, 1884.

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UNITED STATES PATENT OFFICE.

. WILLIAM CARSON, OF ST. PAUL, MINNESOTA.

SHlNGLE-JOINTING 'MACHINE.

SPECIFICATION forming part of Letters Patent No. 299,619, dated June 3,1884.

I Application filed December 18, 1883. (No modell To, all whom it mayconcern:

Be it known that I, WILLIAM OARsoN, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented a new and Improved Shingle-Jointer, of which the followingis a full, clear, and exact description, regard being had to the annexeddrawings and letters of reference marked thereon, forming a part of thismy specification of said invention.

The object of my invention is the production of a simple, inexpensive,but effective machine for jointing the edges of shingles, and one inwhich that class of work can be performed with great expedition.

In'the drawings, Figure 1 is a perspective view of my improvedshingle-jointer; Fig. 2,

a central cross-section, and Fig. 3 a side elevation of the same.

In said figures, A indicates aheavily-framed rectangular foundation, asshown, upon side pieces, 0 c

timbers, a a, of which is mounted, as represented in the figures, ashaft, 1), having bearings in boxes, as b, and carrying two circularsaws, b b, firmly fixed to the shaft, and with a driving-drum, bcentrally of the length of said shaft, as clearly represented in Fig. 2.

Mounted upon the foundation A is a boxframe, as B, having side pieces, a0, and end Posts, as c c, properly secured to the end piece, 0 receiveat their upper ends, as shown, and hold in place a rear reduced portion,d, of spring-tables D and D, a pin, as 11, forming the axis ofarticulation for the spring-tables, being passed through the upper endof the posts a c and the reduced part d, thereby securely holding therear portion of the spring-tables in proper working position. As seen inFigs. 1 and 3, O are adjustingposts having a bearing against thesidepieces, a, and end piece, 0, as shown, and so guide the posts 0 whenadjusted up and down upon clamping-bolts a, working in the slots 0 andengaging with the side pieces, 0, whenever it becomes necessary to causethe springs c to act with more or less energy against the springtables DD to force them into the elevated position, as shown in Fig. 1, one endof the springs 0 being held confined to the top of the posts 0, whiletheir reversely-bent portion, as

shown,impingesand works against the under surface of the tables D D, asrepresented in said figure. Thus. when the table D, for example, isdepressed, as shown in Fig. 3, the spring a 'immediately causes it toreturn to its normal position (shown in Fig. 1) when press ure upon thetable is removed.

As shown in Fig. 1, E E are stops fixedly applied to the tables D D,against the square edge 9 of which the butt-end of a shingle is placedduring the act of jointing the same. At f, as shown in said figure, thetables D D are cut away, so that when a shingle is placed in workingposition upon the tables the upper and under side of the shingle may begrasped by the hand of the operator, and thus held firmly in placeagainst the stop E, and also firmly held down upon the table against theaction of the saw while trimming or cutting off the wavy or irregularedge of the shingle. At the forward end of the tables D a rectangularopening, h, is made in the same, through which a bar, h, passes, whichis secured to the side pieces, 0, and at the top of the bar a stop, as his provided, as shown, which limits the upward throw of the table. Asrepresented in Figs. 1 and 3, the bar h has an oblique set, and as theopening it of the table D is of a width greater than the thickness ofthe bar, and of a length greater than the width of the bar h, as shown,the upward and downward throw of the table is effected without bindingupon the bar, and thus the table D is guided and steadied in its up anddown movements, while at the same time the upward throw of the table islimited, as shown.

In Fig. 1 the tables D D are shown in their normal position-to wit, attheir full upward throw-4n which position the points of the uppermostsaw-teeth, i, will be slightly below the Working-face of the tables, andthus when the shingle is adjusted for operation upon the tables theshingle can be set laterally over the saw-teeth a sufficient distance tocut off the irregular edge without touching them. Thus placed inposition, the operator now grasps the shingle at f with a firm, steadyhold, and simultaneously presses down upon the table, whereupon the sawengages with the shingle and saws off the irregular edge, and thusstraightens its edge, the refuse falling upon the inverted-V-shapedtable L, between the saws, and, falling down on a carrier beneath, isconveyed to a refuse-car for removal away from the machine. In thismanner it will be seen that the cut of the saws If is in line with thegrain of the shingle, thus performing smooth work, which is verydesirable.

As shown in Fig. 1, the inverted-V-shaped table L extends between thesaws the whole length of the machine, and with its sloping sides k issufficiently near the saws to effect a proper discharge of the refusecut from the shingles, as well as serve as a shield to thedriving-pulley b As shown, the machine is a double one, and twooperators will find no difliculty in operating upon the machine at thesame time, thus effecting a great amount of work in a brief period oftime. A table, as at H, on the front end of the machine may be utilizedto hold a quantity of shingles ready for having their edges madestraight, and which will also serve to prevent the operator frompressing forward in too near contiguity with the saws when in operation.In practice the saws will be set so as to just clear the tables D D, andthus the action of the saws will have a more direct bearing against thestops E, and so the cut will be made without strain either upon theshingle or the saw.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination of the double-inclined central stationary guard, L,affixed to the frame above the driving-pulley, with the singlesupportingframe A, carrying shaft 1), with driving-pulley, and providedwith two hinged adjustable tables, D, arranged outside of the outer faceof the saws, for supporting the shingles while being jointed, and withtwo disksaws, 6 arranged 011 the inside of the frame A on shaft 1), andoutside of the said inclined stationary guard L, substantially asdescribed.

2. A machine for jointing shingles, comprising in its construction atable, D, pivoted at its rear end to a post, 0, and provided with anactuating-spring, as c,'which has its rear end applied to an adjustablepost, 0, whereby the tension of the spring can be increased ordiminished, substantially as and for the purpose described.

3. A machine for jointing shingles, which comprises in its constructiona table, D, pivotally hinged at its rear end to a rear portion of themachine and slotted at its forward end, as at h, in combination with astationary obliquely-set post, h, having a stop, h", to limit the upwardthrow of the table, and a spring, 0, for actuating the table D in anupward direction, substantially as described.

\VILLIAM CARSON.

Witnesses:

\VM. H. SMITH, E. H. DRAKE.

